Salinity Probes that work with the Apex

[Tony73]

Wrong connection or bad soldering. Wrong soldering, maybe

Ok I Will check with my friend that he did the solder.

Anyway, the wires are two right? Is It possibile tò know by the color or something else which Is one and other?
Which PIN tò solder?

Best regards
Antonio

 

[HighlandReef]

Well, after only about a week my probe started reading incorrectly.
Tried recalibration but probe floats in the - direction. Went from 35 to 33.6.
I’m adjusting it by the compensation setting on the apex probe setup screen but just keeps floating.
I sent a chat message to the seller but will have to see if I can get a replacement or do a return. It’s AliExpress, not holding my breath.
The probe I purchased is from alvin industries.

 

[Tony73]

Hello

Caming back

I solder wires as Page 4 of this thread.

When i do calibration on step 7 of 8 i got this error:
This device does note appear tò be calibrating properly; ensure that AOS Is up tò date on the Apex.


What I wrong?

Regards
Tony

 

[Lbrdsoxfan]

AOS means update your apex head unit. The version of the software that's in use is out of date.

 

[Tony73]

 

[Lbrdsoxfan]

I have the same thing, are you doing the auto or manual calibration. I've had better luck with manual calibration.

Also what are you using to calibrate the probe?

 

[Tony73]

I have the same thing, are you doing the auto or manual calibration. I've had better luck with manual calibration.

Also what are you using to calibrate the probe?

I'm using task calibration, following step by step.
I'm using Neptune calibration liquid

 

[Lbrdsoxfan]

I've always done it through the manual calibration, try that. I also use apex local instead of fusion as I don't fully trust fusion for calibration.

 

[Tony73]

Done Just now with Apex Local

Same issue

 

[Lbrdsoxfan]

It's either something you are/aren't doing or the probe isn't reading right.

 

[Tony73]

I would like tò invert the wires soldered

 

[Lbrdsoxfan]

Desolder and resolder.

 

[Sideshowdave2]

I want to monitor tds (rodi) with a pm2, I know the pm2 could be configured to do it but do you think a hydros or other tds sensor solder with a din connector (like shown on page 4) would work?

 

[MnFish1]

I want to monitor tds (rodi) with a pm2, I know the pm2 could be configured to do it but do you think a hydros or other tds sensor solder with a din connector (like shown on page 4) would work?

I do not think you can do this - i.e. a salinity of 0 measured through the PM2, may not reflect a TDS of 0. But it is an interesting thought. Why do you want a constant measurement of your RODI TDS through PM2, when there are in-line TDS measuring devices already on many available units?

 

[Sideshowdave2]

I do not think you can do this - i.e. a salinity of 0 measured through the PM2, may not reflect a TDS of 0. But it is an interesting thought. Why do you want a constant measurement of your RODI TDS through PM2, when there are in-line TDS measuring devices already on many available units?

I want to be able to log it to predict resin exhaust rate and maybe throw an alarm. I red somewhere that there is a mode to use the salinity probe as a tds probe… but 300$ for a lab grade salinity just to read tds is not logical at all to me

 

[MnFish1]

I want to be able to log it to predict resin exhaust rate and maybe throw an alarm. I red somewhere that there is a mode to use the salinity probe as a tds probe… but 300$ for a lab grade salinity just to read tds is not logical at all to me

Maybe I'm being unclear. You can take a daily or every other day TDS measurements in real time. Anyway to answer what you were asking - I have not seen that a salinity probe could be used as a TDS probe (nor would one every check that - since the TDS of saltwater is so high). Additionally Salinity and TDS are not the same measurement.

 

[Sisterlimonpot]

Maybe I'm being unclear. You can take a daily or every other day TDS measurements in real time. Anyway to answer what you were asking - I have not seen that a salinity probe could be used as a TDS probe (nor would one every check that - since the TDS of saltwater is so high). Additionally Salinity and TDS are not the same measurement.

TDS meter integration: would be a great feature for Apex

Most of us have an in-line TDS meter that sits on our RO system, probably with 2 sensors for incoming and outgoing water. Knowing that the quality of the water that exits the RO system is the key foundation block in our systems stability (mainly nutrient related) it seems odd to me that this key...

forum.neptunesystems.com

 

[Sideshowdave2]

Anyone tried a simple tds probe on a pm2?

 

[nunoml]

Anyone tried this one ?

2310-C High-Range Conductivity Electrode (K=10, BNC Connector)

Apera Instruments 2310-C Conductivity Electrode is designed for high-range conductivity measurement (up to 2,000 MS/cm, K=10.0). Equipped with Apera's unique sensor ring coated with platinum black, the electrode provides a stable and accurate measurement in high range conductivity. The accuracy...

aperainst.com

 

[Lbrdsoxfan]

The k rating is on point, give it a shot and let us know. Still will need to mod the bnc connector.